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Old 01-15-2016
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Default Small Session Last Night - Looking for Advice

Last night I was tuning my 980X and OC for Geekbench (for an OCN Competition) but I was having issues pushing my CB back. Removing memory sticks didn't seen to help a whole lot... CB stayed pretty near -115°C to -120°C the whole time... Made it back to -130°C or so in single channel, but it wasn't always consistent (sometimes it would hard lock at -125°C).

Does playing with the skews help move that around?

Here are the voltages I was using:

VCore - 1.785V
QPI/VTT - 1.435V
PLL - 1.60V
QPI PLL - 1.32V
IOH - 1.26V
DRAM - 1.86V

Clock skews - 800 / 900

All PWM frequency switches were set to max (1 KHz? Can't remember)

Here's what I've tried:

I lowered my Uncore frequency and lowered QPI/VTT to 1.315V.
I tried raising PLL to 1.70V, but haven't tried 1.50V (derp, should have tried that).
I tried triple, dual, and single channel memory. In my past experience (with a different chip), this made a significant difference, a la -110°C triple channel, -135*°C dual channel, -150°C to full pot single channel.

Chip seems strong... It can do Geekbench in triple channel at -110°C at 5.9GHz. Dual channel at -120°C and 6GHz. I gave a half-assed attempt at Pi and validation. Validated 6.5 and passed 1M at around 6.15GHz (but didn't beat my previous score, so I didn't save).

I'll try 1.50V CPU PLL next time. Any other advice? Should I lower my QPI/VTT even more?

Results:













Photos:





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Last edited by xxbassplayerxx; 01-15-2016 at 17:27.
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Old 01-15-2016
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Default Re: Small Session Last Night - Looking for Advice

Seems to me all the good chips of this gen ran full pot, usually in dual channel

PLL volts seem to jog my memory for helping them run colder, but platform feels like ages ago, and my memory isn't what it used to be in my youth.
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Old 01-15-2016
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Default Re: Small Session Last Night - Looking for Advice

Shame. It seems like you have to get lucky and find a chip with a strong core and a low CB
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Old 01-15-2016
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Default Re: Small Session Last Night - Looking for Advice

no need luck just need q3fe
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Old 01-15-2016
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Default Re: Small Session Last Night - Looking for Advice

I had one retail that could run full pot.... Trying to track it back down lol.
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Default Re: Small Session Last Night - Looking for Advice

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no need luck just need q3fe
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